A kind of air-entrained concrete block using sanding powder as raw material and preparation method thereof

A technology of aerated concrete and sanding powder, applied in the field of building materials, can solve the problems of low compressive strength and high processing cost of sanding powder, and achieve the effects of reducing processing cost, low density and improving recycling rate

Active Publication Date: 2022-02-11
WUHAN BUILDING MATERIAL IND DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of low compressive strength of existing aerated concrete blocks and high cost of sanding powder as waste material

Method used

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  • A kind of air-entrained concrete block using sanding powder as raw material and preparation method thereof
  • A kind of air-entrained concrete block using sanding powder as raw material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The present embodiment provides a kind of aerated concrete block with sanding powder as raw material, comprising the following components by weight: 10 parts of sanding powder, 45 parts of quartz sand, 20 parts of cement, 25 parts of quicklime, 3 parts of gypsum, 0.1 part of aluminum powder. Among them, the main components of sanding powder are tobermolite, quartz, calcite and wood pulp fiber; ordinary Portland cement is used for cement; and medium-speed ash is used for quicklime.

[0026] The preparation method of the aerated concrete block using sanding powder as raw material, the specific process is as follows:

[0027] (1) Sieve the sanding powder so that the residue on a 200-mesh sieve is no more than 1 wt%.

[0028] (2) Weigh 10 parts of sanding powder, 45 parts of quartz sand, 20 parts of cement, 25 parts of quicklime and 3 parts of gypsum after the above sieving, mix and stir evenly.

[0029] (3) Mix the powder obtained in step (2) with water, the ratio of wat...

Embodiment 2

[0032] This embodiment provides a kind of aerated concrete block with sanding powder as raw material, including the following components by weight: 20 parts of sanding powder, 40 parts of quartz sand, 20 parts of cement, 20 parts of quicklime, 4 parts of gypsum, 0.2 parts of aluminum powder. Among them, the main components of sanding powder are tobermolite, quartz, calcite and wood pulp fiber; ordinary Portland cement is used for cement; and medium-speed ash is used for quicklime.

[0033] The preparation method of the aerated concrete block using sanding powder as raw material, the specific process is as follows:

[0034] (1) Sieve the sanding powder so that the residue on a 200 mesh sieve is no more than 1wt%;

[0035] (2) Take by weighing 20 parts of sanding powder after the above-mentioned sieving, 40 parts of quartz sand, 20 parts of cement, 20 parts of quicklime and 4 parts of gypsum and mix and stir;

[0036] (3) Mix the powder obtained in step (2) with water, the rat...

Embodiment 3

[0039] The present embodiment provides a kind of aerated concrete block with sanding powder as raw material, comprising the following components by weight: 15 parts of sanding powder, 55 parts of quartz sand, 10 parts of cement, 20 parts of quicklime, 3 parts of gypsum, 0.15 parts of aluminum powder. Among them, the main components of sanding powder are tobermolite, quartz, calcite and wood pulp fiber; ordinary Portland cement is used for cement; and medium-speed ash is used for quicklime.

[0040] The preparation method of the aerated concrete block using sanding powder as raw material, the specific process is as follows:

[0041] (1) Sieve the sanding powder so that the residue on a 200 mesh sieve is no more than 1wt%;

[0042] (2) Take by weighing 15 parts of sanding powder after the above-mentioned sieving, 55 parts of quartz sand, 10 parts of cement, 20 parts of quicklime and 3 parts of gypsum and mix and stir;

[0043] (3) Mix the powder obtained in step (2) with water...

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Abstract

The invention provides an aerated concrete block with sanding powder as raw material, which comprises the following components in parts by weight: 10-20 parts of sanding powder, 40-55 parts of quartz sand, and 10-20 parts of cement , 20-30 parts of quicklime, 1-4 parts of gypsum, and 0.08-0.3 parts of aluminum powder. In addition, the invention also provides a preparation method of the air-entrained concrete block. The invention uses sanding powder as a raw material, and the sanding powder has a small particle size, which can be used as a crystal nucleus to promote the hydration reaction of various components in the aerated concrete block, and at the same time improve the strength of the aerated concrete block, and its compressive strength is ≥ 5.0MPa, and the density is small, the pores are evenly distributed, and solid waste such as sanding powder is used as raw materials, which effectively solves the problem of resource recycling of industrial waste, reduces the cost of industrial waste treatment by enterprises, and at the same time reduces Reduce environmental pollution and improve recycling rate.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an aerated concrete block and a preparation method thereof. Background technique [0002] Air-entrained concrete block is a new type of building material that is lightweight, porous, thermal insulation, good fire resistance, nailable, sawable, planable, and has certain earthquake resistance. The existing cement-lime-sand aerated concrete blocks use quartz sand, lime, cement, gypsum, etc. as the main materials, through aluminum powder (paste) to generate gas, and high-pressure saturated steam autoclaving to obtain porous lightweight concrete blocks with certain strength. quality material. Aerated concrete blocks have the characteristics of light weight, fire prevention, heat preservation, heat insulation, durability, shock resistance, environmental protection, convenient processing, and economy. They are mainly used in industrial buildings and civil buildin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/10C04B38/02C04B40/02C04B18/16
CPCC04B28/10C04B40/024C04B2201/50C04B7/02C04B14/06C04B22/143C04B22/04C04B18/16C04B38/02Y02W30/91
Inventor 吴卫平刘晓琴王丽娜卢胜强李阳
Owner WUHAN BUILDING MATERIAL IND DESIGN & RES INST
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